Propelling vessels



(No Model.) Y

J. MON. ROBINSON. PROP ELLING VESSELS.

No. 468,694. Patented Feb. 9, 18 92.

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lm'vimaooes UNITED STATES PATENT V OFFICE,

JONATHAN MCNEIL ROBINSON, OF

VAOAVILLE, CALIFORNIA.

PROPELLING vEssELs.

SPECIFICATION forming part'pf Letters Patent No. 468,694, dated February 9, 1892.

Application filed July 18, 1891. Serial No.

To all whom it may concern:

Be it known that I, JONATHAN McNEIL Ron- INSON, a citizen of the United States of America, residing at Vacaville, in the county of Solano and State of California, have invented certain new and useful Improvements in Propelling Vessels, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to an improvement in'propelling vessels, and has for its object the production of cheap, simple, and highlyefficient means whereby a boat or vessel of any kind can be readily and easily-propelled,

the means therefor being very inexpensive,

strong, and durable.

The invention consists in a having a channel or cylinder located in its bottom and provided with open ends and ex-- tending from the bow to the stern, rotary shafts supported in said cylinder at its ends and having each an endless screw, brackets supporting'said shafts, having front beveled or inclined faces, and driving-chains encompassing sprocket-wheels on the 'outer protruding ends of said shafts for operating the same, whereby water will be forced through said channel or cylinder from the bow to the stern. i

The invention further comprises the detail construction, combination, and arrangement of parts, substantiallyas hereinafter fully set forth, and particularly pointed out in the claim.

In the accompanying drawing; Figure lis a vertical longitudinal sectional view showing a boat or vessel constructed in accordance with my invention. Fig. 2 is an end view of one of the-rotating shafts and its endless screw,a bottom viewof the supporting-bracket being also shown.

Referring to the drawings, A designates a boat or vessel of any preferred ordinary construction. In the bottom of the hull of this boator vessel and extending longitudinally of the length thereof is a cylinder 1 which projects through the bow and stern of the boat and has its ends open. This cylinder-is ofcoursc suitably incased in the bottom of the boat and held in place in any preferred boat or vessel plane instead operated 399,943. (No model.)

way. \Vithin this cylinder, at its ends, are located rotary shafts O C, which extend inwardly from the ends of the cylinder a short distance, said shafts being supported bysuitable brackets b, which consist each of an uppercylindrical portion and lower divergent arms, the front faces of which are beveled or inclined, so as possible to the passage of the water. Each shaft is provided with a double screw I), which condensing it at the stern of the boat, thereby/ causinga dehciencyof water at the bowof the boat and a surplus qrant'ity at the rear thereof, producing the eifectof lowering the bow of the boat and raising the stern, thus causing the boat to travel downward on an inchned of traveling up an inclined plane, as is usual. By this means a boat or, vessel can be readily and easily propelled forward, and the most important advantages of the invention are its simplicity and, more especially, its inexpensiveness, coupled with increased ease and speed of navigation,

\VhileI have shown and described the channel or cylinder and the endless screws as being located in thelongitudinal center of'the hullof the boat self to such arrangement, since the location of two channels or cylinr'lcrs within or outside of the vessel and parallel with the heel and with each other at any point beneath the 'll." tor-line is clearly within the scope of my invention; also, instead of a s n'ocl\'ctwhcel upon the projecting ends of the shafts to be with chains, any other gearing or method maybe employed.

I claim as my invention- A boat or vessel having a channel or cylinder located in its bottom, wvtending from end to form as little resistance as to end thereof, and provided with open ends, compassing said s'procketwheels, all comtwo rotary shafts located in said cylinder, one bined' substantially as set forth. I ID at each end thereof and having each an end- '-In testimony whereof Iaifix my signature in less screw and a sprocket-wheel on its pro- .presence of two witnesses.

truding end, brackets for supporting said JONATHAN MCNEIL ROBINSON; shafts, having upper eylindrical portions and Witnesses:

divergent arms whose forward faces are bev- J OHN N; YOUNG,

eled or tapered, and the driving-chains n- FRANK-H. POWERS. 

